Rousselot · France
Collagen peptides
Peptan®
The active dose. Hydrolysed type I collagen peptides, about 2 kDa, small enough to be absorbed as peptides rather than digested away. The same ingredient and the same 10 g a day used in the placebo-controlled skin trials. Bovine in the neutral and raspberry tubs, fish in the Marin C+.
Skin hydration was significantly higher after 8 weeks; dermal collagen density rose and fragmentation fell from week 4, and both held at week 12 (Asserin 2015, two placebo-controlled trials).
In the guide